Telegraph-sounder.



s. vooRHlEs. TELEGRAPH SOUNDER.

APPLICATION FILED OCT. l5. l9l`l.

atented Feb. 25, 1919.

2 SHEETS-SHEET l.

Inven for ,Sy/veser Voorhes S. VOORHIES.

TELEGHAPH SOUNDER.

APPLlcAxo'N FILED 00115. nsw.

1,295,646. Patented Feb.25,`1919.

2 SHEETS-SHEET 2.

Inven'o r Sylves fer Voorhis SYLVESTER VOORHIES, 0F ENDRLIN, NORTH DAKOTA.

TELEGRAPH-SOUNDER.

Specification of Letters Patent.

Patented rieb. i919.

Application led October 15, 1917. Serial No. 196,749.

To all whomrz't may concern:

Be it known that I, SYLvnsTnn VooRHrss, a citizen of the United States, and a resident of Enderlin, in the county of Ransom and lState of North Dakota, have invented certain new and useful Improvements in Telegraph-Sounders, of which the following is a specification.

One object of my invention is to provide a telegraph sounder which will operate directly in the main line without the use of a local battery.

Another object of my invention is to pro vide in a telegraph sounder a main line magnet coil and a local magnet coil, and means for actuating the local magnet coil from the discharge of a condenser.

Another object of my invention is to provide in a telegraph sounder improved means for adjusting the air gap of the magnetic circuit.

Another object of my invention is to provide in a telegraph sounder a sounder bar and a relay armature actuating contacts to operate a local coil.

With these and incidental objects in view the invention consists of certain novel features of construction and combination of parts, the essential elements of which are hereinafter described with reference to the drawings which accompany and form a part of this specification.

In the drawings Figure 1 is a side elevation of my improved telegraph sounder with parts broken away to better show the construction; Fig. 2 is a plan view of the same, and Fig. 3 is a conventional wiring diagram of the sounder.

This improved sounder is adapted to be connected directly into a main line circuit in which there would be a main line battery at each end of the line.

Looking at Fig 3, the east going line would be connected to binding post 1, and the west going line to binding post 2, and the ground connection established at the binding post 3.

With ordinary line conditions, when the line is not in use the operators keys on the line are all closed and the main line coils 4 would be actuated thereby, drawing down the main line armature 5 with its sounder bar, and also the relay armature 6. In this condition the local coil 7 isbridged across the condenser 8, the circuit being as follows:

From the local coils through wire 9, contact 35, relay armature 6, wire 10, condenser 8, the other side of the condens-er through wires 11 and 12 to the other side of the local coil 7.

When the line is put into service by the opening of any key, the main line coils 4 will be de'e'nergized, the armatures 5 and 6 restored by their springs 13 and 14 respectively, Figlvl, and the condenser 8 will be charged through the following circuit:

Battery from the line 1, if the line is opened to the west, wires 32 and 33, contact 15, Wire 10, condenser 8, wire 11, armature 5, contact 16, wire 17, to the ground at 3.

When the line circuit is again closed during the act of telegraphing, the condenser 8 discharges through the local coil 7 through the circuit lirst traced, and the coil 7 thereby helps to pull down the sounder bar through its armature 34, Fig. 1, thus helpllng to strengthen the action of the sounder Looking at Fig. 1, it is seen that the sounder bar 18 carried the main armature 5 which is insulated from the sounder bar, and also carried, pivoted thereon, the relay armature 6 and the local coil armature 34.

The relay armature 6 is of light construction and is hinged on the pin 19 which is set in an insulating bushing 20 driven into the sounder bar 18.

The contact 15 is carried by the sounder bar, but insulated therefrom, by the flat washer 21, and thecontact 35 is also carried on, but insulated from, the sounder bar 18.

It will be seen that by carrying both the relay armature and its co-acting contact on the sounder bar,` any variation in the adjustment of the sounder bar does not change the adjustment of the relay contacts.

The springs 13 and 14 are preferably carried by threads to the shaft 22, Fig. 2, controlled by a thumb screw 23, in a manner well known to those skilled in the art.

To provide adjustment of the main arma-V ture I prefer to mount the main line coils 4 in sliding ways 24 by means of a yoke 25, and an eccentric 26, mounted in the U-shaped frame member 27, presses the pair of coils downwardly against the springs 28 so that the height of the core 29 may be adjusted by turning the eccentric 26 Without changing the position of the sounder bar and also Without changing the air gap at 30, Fig. 1.

The sounder bar is carried by pivot supports at 3l in the ordinary manner.

lVhile I have described my invention and illustrated it in vone particular design, I do not Wish it understood that I limit myselijl to this construction, as it is evident that the application of my invention may be varied in many Ways Within the scope of the following claims.

Claims:

' 1. In a telegraph sounder the combination of a main line coil, a local coil, a condenser, and circuit changing means controllable by said main line coil for connecting said condenser from line to ground or across'said local coil.

2. In a telegraph sounder the combination of a main line coil, a sounder bar, a main line armature carried by said sounder bar and controllable by said main line coil, a relay armature carried by said sounder bar but insulated therefrom, contacts controllable by said relay armature, a condenser, a local coil, said relay armature and contacts connecting said local coil across said condenser when said main line coil is energized, and connecting said condenser from line to ground when said main line coil is denergized.

3. In a telegraph sounder the combination of a pair of main line coils, a sounder bar associated therewith, Va main lin-e armature carried by said sounder bar and having` an aperture therein, a relay armature carried by said sounder bar and actuated by magnetic lines from said mam line coll through the aperture in said main line armature.

SYLVESTER VOORHIES.

Copies of this patent may be obtained for five lcents each, by addressing the Commissioner of Patents. Washington, D. C. 

